{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-025640","form_type":"8-K","ticker":"KPTI","cik":"0001503802","company_name":"Karyopharm Therapeutics Inc.","filed_at":"2025-02-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:03.819767+00:00","generated_at":"2026-05-26T05:47:21.055314+00:00","sec_items":["3.03","5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Karyopharm files 1-for-15 reverse stock split effective Feb 25 to meet Nasdaq bid price rule","bullets":["Reverse stock split 1-for-15 effective Feb 25, 2025 at 5pm ET; post-split trading starts Feb 26.","Authorized shares reduced to 53,333,333; no fractional shares, cash paid in lieu.","Equity awards, warrants, and convertible notes adjusted proportionally.","New CUSIP number for common stock after split is 48576U205.","Purpose: regain compliance with Nasdaq minimum $1.00 bid price continued listing requirement."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-025640","json":"https://secwatch.observer/filing/0000950170-25-025640.json","markdown":"https://secwatch.observer/filing/0000950170-25-025640.md","text":"https://secwatch.observer/filing/0000950170-25-025640.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1503802/000095017025025640/0000950170-25-025640-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1503802/000095017025025640/kpti-20250224.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-26T05:47:21.055314+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}